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NVIDIA GeForce GTX 680M, codenamed “N13E-GTX”, is a high-end graphics chip, announced in late Q3 of 2012. It is part of the Kepler generation and relies on a GK104 core, constructed through a 28nm process. It consists of eight shader blocks, known as SMX, and each of those has 192 smaller shader cores, also known as CUDA. Only seven of the eight blocks are active in 680M, for a total of 1344 CUDA cores. The package also includes 112 texture cores and 23 raster cores.

All of them operate at 720MHz. NVIDIA has not included the Turbo Mode option, which can normally increase that frequency based on the laptop’s cooling capacity.